已知检索树的后序序列是12,21,19,67,45,23,那么,它的先序序列是________________。
A、21,12,19,23,45,67;
B、23,19,12,21,45,67;
C、23,19,21,12,67,45;
D、23,45,12,67,19,21
发布时间:2025-05-13 04:22:45
A、21,12,19,23,45,67;
B、23,19,12,21,45,67;
C、23,19,21,12,67,45;
D、23,45,12,67,19,21